使用C#编制一个控制台应用-竖曲线标高计算

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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO;   namespace 竖曲线计算 {     class Program     {         static void Main(string[] args)         {             string folder = Directory.GetCurrentDirectory();             string file_path = Path.Combine(folder, "data.txt");             double[,] arr = Toolbox.readData(file_path);             if (arr != null)             {                 string sInput = "";                 bool endApp = false;                 while (!endApp)                 {                     Console.Write("请输入桩号:");                     sInput = Console.ReadLine();                     double dMile = 0;                     while (!double.TryParse(sInput, out dMile))                     {                         Console.Write("This is not valid input. Please enter an integer value: ");                         sInput = Console.ReadLine();                     }                     double h = Toolbox.getElevation(arr, dMile);                       Console.Write("Press 'n' and Enter to close the app, or press any other key and Enter to continue: ");                     if (Console.ReadLine() == "n") endApp = true;                 }               }         }         }     class Toolbox     {         public static double getElevation(double[,] arrIn, double dMile)         {             double[,] arrOut = Toolbox.getData(arrIn);             double h = 0;               for (int i = 1; i < arrOut.GetLength(0) - 1; i++)             {                 double dPrevMile = arrOut[i - 1, 0];                 double dCurtMile = arrOut[i, 0];                 double dNextMile = arrOut[i + 1, 0];                 double dPrevElevation = arrOut[i - 1, 1];                 double dCurtElevation = arrOut[i, 1];                 double dNextElevation = arrOut[i + 1, 1];                 //if (dMile == dPrevMile)                 //{                 //    Console.WriteLine("the elevation is :{0:N5}", dPrevElevation);                 //    break;                 //}                 //else if (dMile == dCurtMile)                 //{                 //    Console.WriteLine("the elevation is :{0:N5}", dCurtElevation);                 //    break;                 //}                 //else if (dMile == dNextMile)                 //{                 //    Console.WriteLine("the elevation is :{0:N5}", dNextElevation);                 //    break;                 //}                 if ((dMile > dPrevMile) && (dMile < dNextMile))                 {                     double dPrevTag = arrOut[i - 1, 5];                     double dCurtTag = arrOut[i, 5];                     double dNextTag = arrOut[i + 1, 5];                     double dRadius = arrOut[i, 2];                     double kL = arrOut[i, 3];                     double kR = arrOut[i, 4];                     double omgea = kR - kL;                     if ((dPrevTag == 0 && dCurtTag == -1 && dNextTag == 0) || (dPrevTag == 1 && dCurtTag == -1 && dNextTag == 0))/// left line right arc                     {                         if (dMile < dCurtMile)                         {                             h = dCurtElevation + kL * (dMile - dCurtMile);                             Console.WriteLine("the elevation is {0:N5}", h);                             break;                         }                         else if (dMile < dNextMile)                         {                             h = dCurtElevation + kL * (dMile - dCurtMile) + Math.Sign(omgea) * Math.Pow((dMile - dCurtMile), 2) / 2 / dRadius;                             Console.WriteLine("the elevation is {0:N5}", h);                             break;                         }                       }                     if (dPrevTag == -1 && dCurtTag == 0 && dNextTag == 1)///either arc                     {                         if (dMile < dCurtMile)                         {                             h = dCurtElevation + kL * (dMile - dCurtMile) + Math.Sign(omgea) * Math.Pow((dMile - dPrevMile), 2) / 2 / dRadius;                             Console.WriteLine("the elevation is {0:N5}", h);                             break;                         }                         else if (dMile < dNextMile)                         {                             h = dCurtElevation + kR * (dMile - dCurtMile) + Math.Sign(omgea) * Math.Pow((dMile - dNextMile), 2) / 2 / dRadius;                             Console.WriteLine("the elevation is {0:N5}", h);                             break;                         }                     }                     if ((dPrevTag == 0 && dCurtTag == 1 && dNextTag == -1) || (dPrevTag == 0 && dCurtTag == 1 && dNextTag == -1))///left arc right line                     {                         if (dMile < dCurtMile)                         {                             h = dCurtElevation + kR * (dMile - dCurtMile) + Math.Sign(omgea) * Math.Pow((dMile - dCurtMile), 2) / 2 / dRadius;                             Console.WriteLine("the elevation is {0:N5}", h);                             break;                         }                         else if (dMile < dNextMile)                         {                             h = dCurtElevation + kR * (dMile - dCurtMile);                             Console.WriteLine("the elevation is {0:N5}", h);                             break;                         }                     }                       //Console.WriteLine("neither");                 }               }             return h;         }         public static double[,] getData(double[,] arrIn)         {             int iRowsCount = arrIn.GetLength(0);             int iColsCount = arrIn.GetLength(1);             double[,] arrOut = new double[(iRowsCount - 1) * 3 + 2, 6];             int iOutRowscount = arrOut.GetLength(0);               arrOut[0, 0] = arrIn[0, 0];             arrOut[0, 1] = arrIn[0, 1];             arrOut[0, 2] = arrIn[0, 2];             arrOut[0, 3] = 0;             arrOut[0, 4] = 0;             arrOut[0, 5] = 0;               for (int i = 1; i < iRowsCount - 1; i++)             {                 double dMile = arrIn[i, 0];                 double dElevation = arrIn[i, 1];                 double dRadius = arrIn[i, 2];                 double dPreMile = arrIn[i - 1, 0];                 double dPreElevation = arrIn[i - 1, 1];                 double dNextMile = arrIn[i + 1, 0];                 double dNextElevation = arrIn[i + 1, 1];                 double dPreSlope = -(dElevation - dPreElevation) / (dPreMile - dMile);                 double dNextSlope = (dNextElevation - dElevation) / (dNextMile - dMile);                 double dArcLength = Math.Abs(dRadius * (dNextSlope - dPreSlope));                 double dTangentLength = dArcLength / 2;                 arrOut[3 * i - 2, 0] = dMile - dTangentLength;                 arrOut[3 * i - 1, 0] = dMile;                 arrOut[3 * i - 0, 0] = dMile + dTangentLength;                 arrOut[3 * i - 2, 1] = dElevation - dTangentLength * dPreSlope;                 arrOut[3 * i - 1, 1] = dElevation;                 arrOut[3 * i - 0, 1] = dElevation + dTangentLength * dNextSlope;                 arrOut[3 * i - 2, 1] = dElevation - dTangentLength * dPreSlope;                 arrOut[3 * i - 1, 1] = dElevation;                 arrOut[3 * i - 0, 1] = dElevation + dTangentLength * dNextSlope;                 arrOut[3 * i - 2, 1] = dElevation - dTangentLength * dPreSlope;                 arrOut[3 * i - 1, 1] = dElevation;                 arrOut[3 * i - 0, 1] = dElevation + dTangentLength * dNextSlope;                 arrOut[3 * i - 2, 2] = dRadius;                 arrOut[3 * i - 2, 3] = dPreSlope;                 arrOut[3 * i - 2, 4] = dNextSlope;                 arrOut[3 * i - 2, 5] = -1;                 arrOut[3 * i - 1, 2] = dRadius;                 arrOut[3 * i - 1, 3] = dPreSlope;                 arrOut[3 * i - 1, 4] = dNextSlope;                 arrOut[3 * i - 1, 5] = 0;                 arrOut[3 * i - 0, 2] = dRadius;                 arrOut[3 * i - 0, 3] = dPreSlope;                 arrOut[3 * i - 0, 4] = dNextSlope;                 arrOut[3 * i - 0, 5] = 1;               }               arrOut[iOutRowscount - 1, 0] = arrIn[iRowsCount - 1, 0];             arrOut[iOutRowscount - 1, 1] = arrIn[iRowsCount - 1, 1];             arrOut[iOutRowscount - 1, 2] = arrIn[iRowsCount - 1, 2];             arrOut[iOutRowscount - 1, 3] = 0;             arrOut[iOutRowscount - 1, 4] = 0;             arrOut[iOutRowscount - 1, 5] = 0;             return arrOut;           }         public static double[,] readData(string file_path)         {             try             {                 //string[] lines = IO.File.ReadAllLines(file_path);                 string line;                 int counter = 0;                 int arrRowsCount = 0;                 char[] delimiterChars = { '\t' };                 StreamReader sr = new StreamReader(file_path);                 line = sr.ReadLine();                 arrRowsCount = int.Parse(line);                 //read the first line                 double[,] arr = new double[arrRowsCount, 3];                 //read the rest lines untill the end                 while (line != null && counter < arrRowsCount)                 {                     line = sr.ReadLine();                     Console.WriteLine(line);                     string[] numbers = line.Split(delimiterChars);                     arr[counter, 0] = double.Parse(numbers[0]);                     arr[counter, 1] = double.Parse(numbers[1]);                     arr[counter, 2] = double.Parse(numbers[2]);                     counter++;                 }                 sr.Close();                 return arr;                 //Console.ReadKey();             }             catch (Exception e)             {                 Console.WriteLine("Exception: " + e.Message);                 return null;             }             finally             {                 //Console.WriteLine("Executing finally block.");             }           }     } }